package com.itcast.service;

import com.itcast.pojo.Member;

import java.util.List;

public interface MemberService {
    //查询是不是会员
    public Member findMember(String telephone);
    //注册会员
    void add(Member member);
    //根据月份查询会员数量
    List<Integer> findByMonthMember(List<String> months);
}
